Product Description

Dormer DOR100COB A777 HSCo Heavy-Duty Jobber Drill 1.00mm OL:34mm WL:12mm

A777 Metric Cobalt Jobber Drill Bits have a heavy-duty 135 degree; split point for use when greater heat is generated during drilling e.g on higher tensile tougher materials and in particular the Aerospace Industry.

Specification

Flute Geometry: Standard Helix Right hand spiral Thick Web
Point Angle:
0.30 mm - 0.95 mm 118 degree; Conical point
1.00 mm to 1.40 mm inclusive 135 degree; 4 facet point
1.50 mm and above 135 degree; split point sizes (Split point geometry to NAS 907 Areospace Specification type P3 Point)

Surface Treatment: Bronze
Material: HSCo Cobalt steel

DIN 338 RN / BS328 / ISO 235

Tip diameter: 1.0mm
Working length: 12mm.
Overall length: 34mm.